Iridium oxide anode

​​​​​​​Iridium Oxide Anode

In electrochemical processes dominated by the oxygen evolution reaction, the durability and catalytic activity of the anode are key factors determining system operating life and energy consumption levels. Our Iridium Oxide Anode at Baoji City ShenAo Metal Materials Co., Ltd. is designed specifically for long-cycle stable operation under strongly acidic and high oxygen evolution conditions. It uses Grade 1 or Grade 2 pure titanium as the substrate, with a dense iridium oxide catalytic coating on the surface. Iridium, noted among noble metals for its very low consumption rate under oxygen evolution conditions, enables this anode to deliver stable oxygen evolution catalytic activity and excellent structural integrity in demanding applications such as acidic water electrolysis, steel strip electroplating, metal foil electrodeposition, advanced oxidation for industrial wastewater, and hydrometallurgy. For industrial production lines that require long-term stable operation and cannot afford frequent shutdowns, this is an electrode product worth serious evaluation.

This product is for B2B Industrial Use Only. Operators should follow relevant chemical safety protocols and electrolysis operation standards.

Technical Specifications

Why Choose Our Titanium Anodes?/ Product Advantages

• Exceptional Durability Under Oxygen Evolution Conditions
  Iridium oxide exhibits a very low corrosion rate among noble metal oxides at oxygen evolution potentials, attributable to the favorable thermodynamic stability of iridium oxide under strongly acidic and high potential conditions. In processes with continuous oxygen evolution such as acidic water electrolysis, chromium plating, and hydrometallurgy, the service life of iridium oxide anodes is typically several times that of ruthenium-based coated anodes. For industrial production lines requiring long-term continuous operation, fewer replacement intervals translate to lower maintenance costs and higher equipment utilization.
• Performance Retention at High Current Densities
  When processes demand rapid gas generation at high current densities or accelerated production schedules, coatings on ordinary anodes may degrade rapidly due to excessive polarization. The iridium oxide coating, with its excellent conductivity and structural stability, maintains stable oxygen evolution catalytic activity and structural integrity at high current densities of 3,000–5,000 A/m², keeping your production line reliable even under full-load operation.
• Chemical Stability in Strongly Acidic Environments
  Strong acid systems such as sulfuric acid, nitric acid, and chromic acid exert intense corrosive and oxidative attack on electrode materials. The iridium oxide coating remains chemically stable in these strongly oxidizing acid solutions, without significant selective dissolution or passivation from prolonged immersion or intermittent operation, making it suitable for long-term service in highly corrosive conditions such as acidic electroplating, pickling waste liquor treatment, and hydrometallurgy.
• Multi-Form Customization for Different Cell Types
  We can supply plate, expanded mesh, tubular, and rod anodes, compatible with filter-press cells, shell-and-tube reactors, immersion electrolytic cells, and rotating electrode cells. Based on your cell dimensions, electrode spacing, and fluid distribution requirements, anode profiles, conductive connection methods, and mounting interfaces can be customized to achieve seamless compatibility with existing production lines.

Real-World Applications

• Electroplating and Surface Treatment: Used as insoluble anodes in strongly acidic plating processes such as hard chrome plating, acidic zinc plating, and anodizing, covering surface treatment lines for automotive components, hydraulic cylinders, molds, and sanitary ware fittings.
• Water Treatment and Disinfection: Used for the electrocatalytic oxidation treatment of high-concentration refractory organic industrial wastewater, covering the deep oxidative degradation of residual organic pollutants in pharmaceutical wastewater, textile dyeing wastewater, and landfill leachate.
• Hydrometallurgy and Metal Recovery: Used for the electrowinning of non-ferrous metals such as copper, nickel, zinc, and cobalt from acidic leach solutions, as well as the electrolytic recovery of heavy metal-containing industrial wastewater, replacing traditional lead anodes.
• Chlor-Alkali and Halogen Chemical Production: Used in electrolysis processes requiring long-term stable operation under high oxygen evolution conditions, such as acidic water electrolysis for hydrogen production, and chlorate and perchlorate production.

The ShenAo Advantage

18 A long time of Fabricating Excellence

Since 2008, we've specialized in valuable metal coated titanium anodes from our office in Baoji's "China Titanium Valley." Our develop bimetallic hazardous welding innovation and progressed coating forms provide items you can trust.

Customization for Your Correct Needs

Every generation line is diverse. We give custom fitted arrangements coordinating your particular current thickness necessities, electrolyte composition, and operational parameters. Whether you require little bunch testing or full-scale generation amounts, we convey on time.

Cost-Effective Lifecycle Management

When coating exhaustion happens, you do not dispose of the whole anode. Our proficient recoating benefit strips the ancient oxide layer, sandblasts the substrate, and reapplies new MMO coating. This expands resource life and decreases your add up to taken a toll of proprietorship considerably.

Frequently Asked Questions

Q: What is the core difference between iridium oxide anodes and ruthenium-iridium anodes in oxygen evolution applications?
A: Ruthenium-iridium anodes hold an advantage in environments with chloride ions, as ruthenium offers high chlorine evolution activity. However, in applications dominated by oxygen evolution with stronger acidity (such as acidic water electrolysis and hard chrome plating), iridium oxide anodes provide better chemical stability and longer service life. In short: choose the ruthenium-iridium system when the medium contains significant chlorides; choose iridium oxide when the medium is primarily strong acid with oxygen evolution.

Q: How is the iridium coating loading determined based on process conditions?
A: Loading directly determines anode service life and cost. For applications with higher current density, stronger acidity, and longer required continuous operation, a higher iridium loading is recommended to extend replacement intervals. For batch processes or scenarios where replacement is less disruptive, standard loading is sufficiently economical. You can provide your process parameters, and our engineers will offer a loading recommendation.

Q: Are iridium oxide anodes suitable for environments containing fluoride ions?
A: This requires careful evaluation. Fluoride ions corrode the titanium substrate and also attack the iridium oxide coating. If the fluoride ion concentration in the electrolyte exceeds 10 ppm, we recommend consulting with us, as a niobium substrate or special protective solution may be needed. It is important to inform us of fluoride and other impurity levels during the selection stage.

Q: How should anodes be handled when the coating reaches the end of its service life?
A: The titanium substrate remains stable in acidic environments. The old coating can be chemically stripped, and once the substrate passes inspection, it can be recoated to restore performance to new-anode levels. We offer a full-service process including incoming inspection of used anodes, coating stripping, substrate treatment, and recoating.

Contact Us

You need a partner who not only supplies products but also solves your challenges alongside you. Our team is ready to engage with your inquiries and provide a tailored solution. Share your specific needs or key requirements with us today, and let us help you efficiently transform your breakthroughs into commercial value.

Titanium Anode Manufacturer

Email: zh@baojiti.com.cn

WhatsApp: +86-15877696471 (updated)

Products: Titanium Anodes, MMO Titanium Anodes, DSA Coated Titanium Electrodes, Electrolysis Electrodes, Hydrogen Production Electrodes, Wastewater Treatment Titanium Anodes.